Alloy 625 Refining Furnace Tube from China
Cold-drawn seamless Alloy 625 tube of heat-resisting nickel-chromium-molybdenum steel for pyrolysis furnace coils in oil refineries. Withstands carburization and high-temperature cracking. Meets 7304.51.50.15 criteria for cold-rolled seamless tubes suitable for refining furnaces.
Duty Rate — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Provide NACE MR0175 compliance for sour service if used in refining; documentation prevents reclassification
• Specify OD/ID tolerances in invoices; precision cold-drawing distinguishes from hot-rolled
• Watch for Section 232 tariffs on steel; heat-resisting alloys often qualify for exclusions